11951Re: Photopolymer separating from polyester backer
- Aug 2, 2010--- In PPLetterpress@yahoogroups.com, mike day <vangogh1888@...> wrote:
> I have seen lines of type go squigglyToo long in the bath. The material is absorbing moisture at the surface and expanding. It can't lengthen but instead assumes a wave form.
> in an up and down line. Whether it is too long a washout and old plates, I
> can't be sure.
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